http://forums.citrix.com/thread.jspa?threadID=238570&tstart=0
C:\Inetpub\wwwroot\Citrix\XenApp\app_code\PagesJava\com\citrix\wi\pages\auth\login.java
Edited this section
// Pull out the fields we have interest in
String user = "." + getSafeFormParameter(web, Constants.ID_USER).trim() + ".context.wwww.qwqw.tree";